Method of molding bottles in singen-mold machines



Aug. 14, 1928. 1,680,746

, K. E. PEILER METHOD OF MOLDING BOTTLES IN SINGLE MOLD MACHINES Fil edDec. 6, 1925 FIG. 3

FIG 6 14 giiVENTO-R which has been produced in the manner shown in Fig.3.

Fig. "5 shows the same arrangement as Fig. 4 after the glass has beencompletely ex anded to fill the mold, and Fig. 6 shows a nished bottle17.

The operation of making an article by means of this apparatus is begunby arranging the mold and the fleck-presSi and counter-blowing device inthe manner s own in Fig. 1. A charge-of molten glass is-deposited in themold 2 and assumes somewhat the position shown at A, Fig. 1. Theblow-head 13 is then placed in position in the recess 5 of the mold andapplies a settlin puff of air which causes the glam to settib into theneck cavity 4 of the mold and around -the upper end of the plunger g, lthereby assuming the position shown at ig. 2.

The blow-head 13 is then removed, the plunger 11 is lowered totheposition shown in Fig. 3, and a counter-blow of air may then beadmitted; through the pipe 10 at a controllable rate, thereby expandingthe glass? within the body cavity 3 of the mold 2 'at. the desiredrate'and to the desired degreeL A cooling blast may be supplied thro ghthe pi e 14 in order to cool the surfbce of the g use which is exposedto the air, landwhich would normally cool at a slower rate than glasswhich is in contact with; the walls of the mold.

The counter-blowing operation may be omitted,'or may be made very short,or may be carried on until the glass has beenblown to about the shapeshown at C, Fig. 3. In either case the mold 2 may then be reverted tothe upright position shown in Fig. 4,

where the glass will stretch down or elongate under the influence ofgravity. While in this position one or more pufl's of air may be appliedto the interior of the glass by means of the blow-head 16. Such puffsmay be applied at a controllable rate and may have a controllableduration, so as to expand the glass to the desired amount and in thedesired manner. The intervals between puffs and between the last puiiand the final blowing operation may be varied in duration to permit thedesired amount of stretching down or elongation of the glass. In thisway various effects may be secured, and the distribution of the glass inthe blown article may be controlled.

As a result of such of these operations as have been employed, the glasswill assume somewhat the position shown at D in Fig. 4. The final blastof air is then applied through the hlow-hend l6 ard the glass is thuscX- pandcd to the finished shape shown at E in Fig. the desired finaldistribution of glass in the walls of the article having been oblaincdby proper proportioning of the various necessary operations.

,ber such as the member 15 bcin As stated above, this blowing processmay be varied by omitting the reverting and finish-blowing operations,the mold 2 being left in the position of Fig. 3, a closure memthereinscrtcd in the recess 5 of theme d, and the counter-blast suppliedthrough the ipe 10 being continued until. the glass lls the mold. Insuch a case the counter-blast must be supplied very quiclrly'ufter theglass is settled in the mold.

So far as I am "aware, I am the first to produce a completely blownarticle of hollow lassware in a single mold from a charge of g assintroduced into the mold in a dctached mass as distinguished from beinginserted in the mold by means of a hlow-pipe. I also believe that I amthe first to produce a completely blown article in a single mold from acharge of glass placed in the mold while the mold is inverted. It is tobe understood that the structure herein shown, as well as the steps ofthe process, may be vatied as desired within the scope of the apipendedclaims.

.' I claim as my invention:

1. The..process of making hollow glassware that comprises depositing acharge of molten glass in a cavity of a finish blow mold, compacting theglass in the lower end of said cavity to form the neck finish of theware, applying blowin pressure t9 said charge and directing coo ing airthrough the charge receiving end of said mold while it is open to chillthe exposed portion 9f said mold charge. M

2. The process of making hollows-glassware that comprises depositing acharge of molten glass in a cavity of an inverted blow.

mold, compacting said charge in the lower end of said cavity to form theneck of the ware by pressure exerted through the upper or bottom portionof said mold, applying pressure to the lower or neck portion of saidmold to expand said charge, and directing a jet of cooling air throughthe open bottom portion of said mold to chill the exposed portion ofsaid mold charge.

3. The process of making hollow glassware that comprises depositing acharge of molten glass into the cavity of an-inverted blow mold throughthe open bottom portion thereof. compacting said mold charge in the neckportion of said mold cavity by fluid pressure applied through the bottomportion of said mold, applying blowing air to said mold charge throughthe neck portion of said mold to expand the same into contact with thewalls of said cavity, and directing a jet of cooling air through theopen bottom portion of said mold cavity to chill th'bxposed portion ofsaid mold charge.

4. The process of making hollow glassmolten glass in the mold cavity ofan inverted blow mold through the open bottom portion thereof,compacting said mold" cheapo into the neck portion of said cavitj' byuid pressure applied above the mdld charge, ex anding said mold cha 0into contact wit the walls of said mold y fluid pressure applied throu'h the neck portion of said mold and simu taneously applying cooling airthrough the open bottom portion of said mold cavity to chill the exposedportion of said charge during the expanding operation.

5. The process of making hollow 'glasswere that. comprises depositing acharge of molten lass in the mold cavity of an inverted 150w moldthrough the open bottom portion thereof, compacting the, mold charge inthelower portion of said cavity by fluid pressure applied above theglllss,

expanding the mold charge into contact with the walls of said cavity byfluid pressure applied heiow the glass and simultaneously applyingcooling air through the open bottom ortion of said molds to chill theoxpose portion of the glass during the expa-nding operation, moving saidmold to a neck-up position, applying a bottom closure to the open end ofsuid'mold, allowing the

